System that protects outside industry heat supply network keeps warm

The utility model discloses a system that protects outside industry heat supply network keeps warm, including the aerogel felt insulation of voluble wrapping in the heat supply pipeline outside, the outside from interior to exterior of aerogel felt insulation voluble wrapping in proper order has the ventilative layer of first thermoreflectance, the cotton felt of a glass, ventilative layer of second thermoreflectance, the cotton felt of the 2nd glass, the ventilative layer of third thermoreflectance, the cotton felt of the 3rd glass, hydrophobic thermal insulation protecting layer and externalcoating, hydrophobic thermal insulation protecting layer's winding department sets up to the lapped structure of the fissure of displacement, and the lap -joint carries out sealing connection throughthe sticky tape, the ventilative layer of first thermoreflectance, the ventilative layer of second thermoreflectance and the ventilative layer of third thermoreflectance all contain ventilative metalaluminum foil, its easy op